How does RFID work?

An RFID system consists of a tag, which is made up of a microchip with an antenna, and a scanner, or reader, with an antenna. The reader sends out electromagnetic waves. The tag’s antenna is tuned to receive these waves. A passive RFID tag draws power from field created by the reader and uses it to power the microchip’s circuits. The chip then modulates the waves that the tag sends back to the reader and the reader converts the new waves into digital data. The GearEye Dongle, which is a compact RFID reader, sends electromagnetic waves to all the tags around. Then all the IDs received back are passed to the GearEye app and associated with different objects.

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